What do you suggest if i would like to smoke again but i'm scared!?

Don't understand ?: Smoke what? If you quit smoking tobacco, you should be scared of resuming tobacco smoking, because it is poisonous, and i would be nervous too if i were to resume taking in poison. If you are talking marijuana, i will assume you stopped for a good reason, and the fact that you are nervous about resuming indicates your brain is trying to give you a message, and perhaps you should be listening.